TABLE 2.
| Characteristics | TCGA (n = 334) | GSE62254 (n = 300) | GSE84437 (n = 433) |
|---|---|---|---|
| No. of patients (%) | No. of patients (%) | No. of patients (%) | |
| Age at diagnosis | |||
| ≤65 | 152 (45.5) | 172 (0.6) | 150 (0.3) |
| >65 | 182 (54.5) | 128 (0.4) | 283 (0.7) |
| Gender | |||
| Male | 217 (65) | 199 (0.7) | 296 (0.7) |
| Female | 117 (35) | 101 (0.3) | 197 (0.3) |
| Tumor location | |||
| Proximal | 80 (24.0) | 32 (0.1) | Not Available (NA) |
| Body/fundus | 117 (35.0) | 127 (0.4) | NA |
| Distal | 123 (36.8) | 155 (0.5) | NA |
| Others | 14 (4.2) | 6 (0.0) | NA |
| Tumor grade | |||
| G1 | 198 (59.3) | NA | NA |
| G2 | 118 (35.3) | NA | NA |
| G3 | 9 (2.7) | NA | NA |
| unknown | 9 (2.7) | NA | NA |
| Tumor stage | |||
| Stage I | 44 (13.2) | 30 (0.1) | NA |
| Stage II | 104 (31.1) | 96 (0.3) | NA |
| Stage III | 139 (41.6) | 95 (0.3) | NA |
| Stage IV | 34 (10.2) | 77 (0.3) | NA |
| unknown | 13 (3.9) | 2 (0.0) | NA |
| T status | |||
| T1 | 14 (4.2) | 0 (0.0) | 11 (0.0) |
| T2 | 72 (21.6) | 186 (0.6) | 38 (0.1) |
| T3 | 157 (47.0) | 91 (0.3) | 92 (0.2) |
| T4 | 87 (26.0) | 21 (0.1) | 292 (0.7) |
| unknown | 4 (1.2) | 2 (0.0) | 0 (0.0) |
| N status | |||
| N0 | 97 (29.0) | 38 (0.1) | 80 (0.2) |
| N1 | 91 (27.2) | 131 (0.4) | 188 (0.4) |
| N2 | 70 (21.0) | 80 (0.3) | 132 (0.3) |
| N3 | 66 (19.8) | 51 (0.2) | 33 (0.1) |
| unknown | 10 (3.0) | 0 (0.0) | 0 (0.0) |
| M status | |||
| M0 | 299 (89.5) | 278 (0.9) | NA |
| M1 | 23 (6.9) | 27 (0.1) | NA |
| unknown | 12 (3.6) | 0 (0.0) | NA |